{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x616b8a24b40afc698f59520846d6af18d5608e0ab4c6a7ab6f98f1b94b3a537e",
    "signature": "0x3a99caebe600f45234c7d9dd9f3b5d57ae4542e622aa91ead385c1da1efd47a37dcdc62d4398641dbccc117b47ce013ab8ef4d43ee565202acea9f9b3e852b651c",
    "signer": "0xd367754F1CE503c2D28B6793582BC23fD71eE997",
    "userId": "420647095"
  }
}